function login_validar() {
	document.getElementById('sys_login_log').style.display = "none";
	document.getElementById('sys_login_wait').style.display = "block";
	xajax_Sys_Login_Validar(xajax.getFormValues('frm_login'));
}

function form_validar(form_name) {
	document.getElementById('sys_save').style.display = "none";
	document.getElementById('sys_save_wait').style.display = "block";
	xajax_Sys_Form_Validar(xajax.getFormValues(form_name));
}

function contraer(item) {
	obj=document.getElementById(item);
	obj.style.display="none";
}
function expandir(item) {
	obj=document.getElementById(item);
	obj.style.display="block";
}

//Function to open pop up window
function openWin(theURL,winName,features) {
  	window.open(theURL,winName,features);
}

function PopUpWindow(pagina, ancho, alto)
{
	vLeft=(screen.availWidth/2) - (ancho/2);
	vTop=(screen.availHeight/2) - (alto/2);
	window.open(pagina, "Ayuda", "toolbar=no,location=no,directories=no," +
					"status=no,menubar=no,scrollbars=yes,resizable=no,copyhistory=no," +
					"width=" + ancho + ",height=" + alto + ",top=" + vTop +",left=" + vLeft);
}